Grand Forks pollen forecast — North Dakota Museum of Art neighborhood
Pollen Today
Today (20 September) pollen in North Dakota Museum of Art, Grand Forks is moderate; ragweed is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed remains moderate, grass at low levels.
7-Day Trend
Over the next week grass will increase; ragweed will decrease; mugwort will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| Alder (Alnus) | None | 0/100 |
| Birch (Betula) | None | 0/100 |
| Hazel (Corylus) | None | 0/100 |
| Cypress (Cupressaceae) | None | 0/100 |
| Grass (Poaceae) | None | 0/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
| Ragweed (Ambrosia) | Moderate | 31/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | — |
| Grass (Poaceae) | Low | 2/100 | |
| Willow (Salicaceae) | None | 0/100 | — |
| Mugwort (Artemisia) | None | 0/100 | |
| Ragweed (Ambrosia) | Moderate | 42/100 |
Local Environmental Conditions
North Dakota Museum of Art, best described as a museum on the University of North Dakota campus, follows Grand Forks's general vegetation pattern rather than a distinct local mix of its own. Any difference from the citywide pattern here tends to be minor rather than a distinct microclimate.
Situated a landmark in Grand Forks, North Dakota Museum of Art shares the area's pollen timeline, beginning with elm and cottonwood in March before ash extends the tree season through April. Peak grass pollen arrives in May and June, and ragweed pollen builds through late summer into September. The continental climate and surrounding farmland drive a well-defined spring tree peak and a strong late-summer ragweed season, consistent with the wider Grand Forks area.
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Frequently Asked Questions About Pollen in North Dakota
Is pollen high in Grand Forks right now?
On 20 September 2026, overall pollen levels in Grand Forks are moderate. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Grand Forks tomorrow?
On 21 September 2026, pollen conditions in Grand Forks will be different from today, with ambrosia at moderate levels, grass at low levels
Is pollen expected to decrease in Grand Forks this week?
According to the five-day outlook, ambrosia pollen levels are expected to gradually decrease, while grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Grand Forks?
On 20 September 2026, Ambrosia is the dominant pollen source in Grand Forks. artemisia and grass are not currently active.
When is pollen season in Grand Forks?
How often is the Grand Forks pollen forecast updated?
The Grand Forks pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Grand Forks come from nearby or far away?
Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.
Are pollen levels in Grand Forks based on measurements or forecasts?
Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.
Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Grand Forks, modern forecasts combine recent measurements, weather data, and information about local vegetation.
This allows us to estimate pollen levels for today and the coming days, not just report the past.
Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
Get More in the Airmine Pollen app
Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
